<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
      <el-breadcrumb-item>活动详情</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <!-- 搜索框以及搜索按钮 -->
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button slot="append" icon="el-icon-search" @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <!-- 添加按钮 -->
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">
            添加用户
          </el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <template>
        <el-table :data="userlist" border stripe>
          <el-table-column type="index"> </el-table-column>
          <el-table-column prop="username" label="姓名" width="180">
          </el-table-column>
          <el-table-column prop="email" label="邮箱" width="180">
          </el-table-column>
          <el-table-column prop="mobile" label="电话"> </el-table-column>
          <el-table-column prop="role_name" label="角色"> </el-table-column>
          <el-table-column prop="mg_state" label="状态" width="65px">
            <template v-slot="scope">
              <el-switch
                v-model="scope.row.mg_state"
                @change="userStateChanged(scope.row)"
              >
              </el-switch>
            </template>
          </el-table-column>

          <el-table-column label="操作" width="180px">
            <template v-slot="scope">
              <!-- 用户编辑按钮 -->
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              >
              </el-button>
              <!-- 用户删除按钮 -->
              <el-button
                type="primary"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              >
              </el-button>
              <!-- 用户操作按钮 -->
              <el-tooltip
                class="item"
                effect="dark"
                content="分配角色"
                placement="top"
                :enterable="false"
              >
                <el-button
                  type="primary"
                  icon="el-icon-setting"
                  size="mini"
                  @click="setRole(scope.row)"
                >
                </el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
      </template>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClose"
    >
      <!-- 内容主体区 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <!-- 用户名 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <!-- 手机 -->
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false"> 取 消 </el-button>
        <el-button type="primary" @click="addUser"> 确 定 </el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @click="editDialogClosed"
    >
      <!-- 内容主体区 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <!-- 用户名 -->
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <!-- 手机 -->
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button type="primary" @click="editUserInfo"> 确 定 </el-button>
        <el-button @click="editDialogVisible = false"> 取 消 </el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRolesDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户: {{ userInfo.username }}</p>
        <p>当前的角色: {{ userInfo.role_name }}</p>
        <p>
          分配角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱规则
    var checkemail = (rule, value, callback) => {
      const regEmail = /^([a-zA-Z]|[0-9])(\w|)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法邮箱'))
    }
    // 验证手机号规则
    var checknumber = (rule, value, callback) => {
      const regNumber = /^((13[0-9])|(17[0-1,6-8])|(15[^4,\\D])|(18[0-9]))\d{8}$/
      if (regNumber.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }

    return {
      // 已选中的角色id值
      selectedRoleId: '',
      // 获取的角色列表
      rolesList: [],

      // 需要被分配角色的用户信息
      userInfo: {},

      // 控制分配角色对话框的显示与隐藏
      setRolesDialogVisible: false,
      queryInfo: {
        // 获取用户列表的参数对象
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      // 用户列表与总数据条数
      userlist: [],
      total: 0,
      // 控制添加对话框的显示与隐藏
      addDialogVisible: false,
      // 控制修改对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证的规则对象
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入邮箱地址',
            trigger: 'blur'
          },
          {
            validator: checkemail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号码',
            trigger: 'blur'
          },
          {
            validator: checknumber,
            trigger: 'blur'
          }
        ]
      },

      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 16,
            message: '密码的长度在6~16个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱地址',
            trigger: 'blur'
          },
          {
            validator: checkemail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号码',
            trigger: 'blur'
          },
          {
            validator: checknumber,
            trigger: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    // 监听分配角色对话框的事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    },
    // 点击确认,分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择你要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('分配角色失败')
      }
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRolesDialogVisible = false
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 获取角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      // this.$message.success('获取角色列表成功')
      this.rolesList = res.data
      this.setRolesDialogVisible = true
    },
    // 确认是否删除的消息框
    async removeUserById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      // 如果点确定则请求,再判断status是否为200,如果是则再次加载数据列表
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },

    // 修改用户信息并提交
    editUserInfo () {
      // 提交前先要预验证表单
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        // 关闭对话框,重新加载,并提示更新成功
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 监听修改对话框关闭的事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 点击修改按钮,显示用户编辑的对话框
    async showEditDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
    },
    // 点击确认按钮,添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 自动关闭添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 监听用户对话框关闭事件,当对话框关闭时,重置输入框里所有的值
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 获取用户列表数据
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })

      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange (pagesize) {
      this.queryInfo.pagesize = pagesize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (pagesize) {
      this.queryInfo.pagenum = pagesize
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)

      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户列表失败')
      }
      this.$message.success('更新用户列表成功')
    }
  },
  created () {
    this.getUserList()
  }

}
</script>
<style lang="less" scoped>
</style>
